Port libuuid from util-linux

This is required by sgdisk.

lib/import/import-libuuid.mk

@@ -0,0 +1,5 @@
+UTIL_LINUX_DIR := $(call select_from_ports,util-linux)/src/lib/util-linux
+LIBUUID_DIR := $(UTIL_LINUX_DIR)/libuuid/src
+
+INC_DIR += $(LIBUUID_DIR)
+INC_DIR += $(UTIL_LINUX_DIR)/include

lib/mk/libuuid.mk

@@ -0,0 +1,35 @@
+UTIL_LINUX_DIR := $(call select_from_ports,util-linux)/src/lib/util-linux
+UTIL_LINUX_LIB_DIR := $(UTIL_LINUX_DIR)/lib
+LIBUUID_DIR := $(UTIL_LINUX_DIR)/libuuid/src
+
+LIBS += libc
+
+# util-linux/libuuid files
+SRC_C := clear.c
+SRC_C += compare.c
+SRC_C += copy.c
+SRC_C += gen_uuid.c
+SRC_C += isnull.c
+SRC_C += pack.c
+SRC_C += parse.c
+SRC_C += predefined.c
+SRC_C += test_uuid.c
+SRC_C += unpack.c
+SRC_C += unparse.c
+SRC_C += uuid_time.c
+
+# util-linux/lib files
+SRC_C += sha1.c
+SRC_C += md5.c
+SRC_C += randutils.c
+
+CC_C_OPT += -Wno-implicit-function-declaration
+
+INC_DIR += $(LIBUUID_DIR)
+INC_DIR += $(UTIL_LINUX_DIR)/include
+INC_DIR += $(UTIL_LINUX_LIB_DIR)
+
+vpath %.c $(LIBUUID_DIR)
+vpath %.c $(UTIL_LINUX_LIB_DIR)
+
+SHARED_LIB = 1

lib/symbols/libuuid

@@ -0,0 +1,33 @@
+rand_get_number T
+random_get_bytes T
+random_get_fd T
+random_tell_source T
+ul_MD5Final T
+ul_MD5Init T
+ul_MD5Transform T
+ul_MD5Update T
+ul_SHA1 T
+ul_SHA1Final T
+ul_SHA1Init T
+ul_SHA1Transform T
+ul_SHA1Update T
+uuid_clear T
+uuid_compare T
+uuid_copy T
+uuid_generate T
+uuid_generate_md5 T
+uuid_generate_random T
+uuid_generate_sha1 T
+uuid_generate_time T
+uuid_generate_time_safe T
+uuid_get_template T
+uuid_is_null T
+uuid_pack T
+uuid_parse T
+uuid_time T
+uuid_type T
+uuid_unpack T
+uuid_unparse T
+uuid_unparse_lower T
+uuid_unparse_upper T
+uuid_variant T